Help Fast Change in mass of Water

  • Thread starter Thread starter infinite_gbps
  • Start date Start date
  • Tags Tags
    Change Mass Water
AI Thread Summary
To determine how much water vaporizes when transitioning from a high temperature and pressure to 1 atm, one can utilize the change in enthalpy and specific enthalpy values. The mass of water before opening the container is known, and the volume at the initial conditions is also provided. Upon opening the container, the water will begin to vaporize as it reaches 100°C at 1 atm, but this process will not be violent. The calculation involves finding the specific enthalpy at both the initial state and at 100°C to assess the mass that vaporizes. Understanding the phase diagram of water can aid in visualizing these changes.
infinite_gbps
Messages
16
Reaction score
0
Help Fast! Change in mass of Water

Hi Everyone,

I kind of need some quick help. If I am at a high temp 'x' and a high pressure 'p' (above 100 C and 1 atm)
in a sealed container then the water will not be boiling. But let say that you open the top. Now the water is exposed to 1 atm and the water will want to boil and vaprize because the temp is above 100 C.

How can I find out how much of the water actually vaporizes during the time it wants to go from temperature 't' to 100C. At 100C it will continue to boil but it won't be violently vaporizing, correct?

I was thinking that I can use the change in enthalpy to figure it out but I got stuck with specific enthalpy. I have the mass of the water before I open the container. I bet you guys/girls can help me figure out the mass of the water when it gets to 100C at 1 atm then I can figure out how much vaporized, correct? I know the volume at temp 't' and pressure 'p' as well for water.

Thanks in advance.
 
Engineering news on Phys.org
After over 25 years of engineering, designing and analyzing bolted joints, I just learned this little fact. According to ASME B1.2, Gages and Gaging for Unified Inch Screw Threads: "The no-go gage should not pass over more than three complete turns when inserted into the internal thread of the product. " 3 turns seems like way to much. I have some really critical nuts that are of standard geometry (5/8"-11 UNC 3B) and have about 4.5 threads when you account for the chamfers on either...
Thread 'Physics of Stretch: What pressure does a band apply on a cylinder?'
Scenario 1 (figure 1) A continuous loop of elastic material is stretched around two metal bars. The top bar is attached to a load cell that reads force. The lower bar can be moved downwards to stretch the elastic material. The lower bar is moved downwards until the two bars are 1190mm apart, stretching the elastic material. The bars are 5mm thick, so the total internal loop length is 1200mm (1190mm + 5mm + 5mm). At this level of stretch, the load cell reads 45N tensile force. Key numbers...
Thread 'What type of toilet do I have?'
I was enrolled in an online plumbing course at Stratford University. My plumbing textbook lists four types of residential toilets: 1# upflush toilets 2# pressure assisted toilets 3# gravity-fed, rim jet toilets and 4# gravity-fed, siphon-jet toilets. I know my toilet is not an upflush toilet because my toilet is not below the sewage line, and my toilet does not have a grinder and a pump next to it to propel waste upwards. I am about 99% sure that my toilet is not a pressure assisted...
Back
Top